timeSeriesAggregateStatistics element

Statistics related to one time series aggregate data point. It is
available from v6 for data points containing aggregate data. It includes
further statistics about the data point. An aggregate can be across
entities (e.g., fd_open_across_datanodes), over time (e.g., a daily point
for the fd_open metric for a specific DataNode), or both (e.g., a daily
point for the fd_open_across_datanodes metric). If the data point is for
non-aggregate date this will return null.